Analyses of medical data models - identifying common concepts and items in a repository of medical forms.

One year ago the portal of Medical Data Models (https://medical-data-models.org) was presented as a resource for the scientific community. As of November 2012 there are approximately 3,300 forms with 102,000 items available in the CDISC ODM format. First descriptive analyses regarding form metadata demonstrate the capability of such a repository to identify commonly used medical concepts. Most common items are administrative attributes which indicates that more clinical information are needed to increase the secondary use of data documented within these forms.